Window blind



NV. 13, 1945. T, sMlTH 2,388,715

WINDOW BLIND Filed Jan. 29, 1944 2 Sheets-Sheet 2 #m 5px/)f WWW @ms Patented Nov. A13, 1945 UNITED STATES PATENT GFFICE WINDOW BLIND Lillian T. Smith, Chicago, lll. Application January 29, 1944, Serial No. 520,293

2 Claims.

The present invention relates to new and useful improvements in window blinds, and has for one of its important objects to provide, in a manner as hereinafter set forth, a device of this character which is adapted to be installed on the interior of a window for operation from within the house or other building,

Another very important object of the invention is to provide an inside window blind of the aforementioned character which is adapted to function, if desired, as a black-out screen or, in cold weather, for retaining heat in the house or other building.

Still another important object of the invention is to provide an inside window blind of the character described comprising a multiplicity of vertically slidable panels, all of which may be readily adjusted to any desired position for ventilation, light, et cetera.

Other objects of the invention are to provide an inside window blind which will be comparatively simple in construction, strong, durable, highly efficient and reliable in use, attractive in appearance, and which may be manufactured and installed at low cost.

All of the foregoing, and still further objects and advantages of the invention, will become apparent'from a study of the following specification, taken in connection with the accompanying drawings wherein like characters of reference designate corresponding parts throughout the several views, and wherein:

Figure l is a view in front elevation of a window blind constructed in accordance with the present invention.

Figure 2 is a vertical sectional view, taken substantially on the line 2-2 of Figure 1.

Figure 3 is a fragmentary view in horizontal section, taken substantially on the line 3-3 of Figure 1.

Figure 4 is a perspective view of one of the vertically slidable panels.

Referring now to the drawings in detail, it will be seen that reference character I designates generally a conventional window. The window I comprises a frame 2 and a sill 3. Upper and lower sashes 4 and 5, respectively, are slidable in the frame 2.

The embodiment of the present invention which has been illustrated comprises a pair of vertical bars 6 which are rigidly secured by screws l on the facings 8 of the window frame 2. The bars E may be of wood or any other suitable material. As illustrated to advantage in Figure 3 of the drawings, the bars 6 have formed in their opposed surfaces vertical grooves or channels 9 which extend from end to end of said bars.

The grooves or channels 9 in the bars 6 are for the reception of a multiplicity of vertically slidable panels I0. The fit of the end portions of the panels l0 in the grooves 9 is such that said panels are frictionally secured in adjusted position between the bars 6.

Endless tapes Il of suitable flexible material encircle the panels Il) and are adhesively or otherwise secured thereto. The lower portions of the tapes Il are free of the panels l ll and are adhesively secured together in a manner to provide depending tabs l2.

It is thought that the manner in which the invention may be used will be readily apparent from a consideration of the foregoing. Briey, all of the vertically slidable panels l0 may be readily adjusted to any desired position between the bars 6. With these panels in the position illustrated in Figure 2 of the drawings, the invention functions as a blackout shield or as what may be considered an inside storm window for preventing excessive loss of heat. When ventilation or light are desired, the panels lli may be positioned in opposed relation to each other. The panels l0, which are preferably attractively ornamented, may be of any suitable material. Adjustment of the panels l0 without the necessity of touching them is facilitated by the tabs I 2. In the installation which has been illustrated, the lower ends of the grooves or channels 9 are closed by the window sill 3, while said grooves or channels are open at their upper ends. It will accordingly be seen that the panels l0 may readily be inserted in the grooves 9 or removed therefrom as desired.

It is believed that the many advantages of a window blind constructed in accordance with the present invention will be readily understood, and although a preferred embodiment of the device is as illustrated and described, it is to be understood that changes in the details of construction may be resorted to which-will fall within the scope of the invention as claimed.

What is claimed is:

1. A window blind of the character described comprising a pair of bars mounted vertically on a window frame, panels mounted for vertical sliding adjustment between said bars, and endless loops of' flexible material extending around the panels and secured thereto, said loops including portions which are free of the panel, said portions being adhesively secured together and defining operating tabs depending from the lower edges of the panels.

2. In combination with a window frame having an inwardly projecting sill, a pair of bars secured vertically on the inner side facings of the frame and having their lower ends resting on the sill, said bars having a plurality of pairs of 0pposed vertical grooves in their opposed surfaces extending from end to end of the bars, said grooves being open at the upper ends of the bars and closed at their lower ends by the sill, and a plurality of vertically adjustable panels having their end portions frictionally engaged in the different pairs of grooves so as to be retained in any vertically adjusted position.

LILLIAN T. SMITH. 

